Using Leonardo to as a joystick

This project used Leonardo board(new version of UNO). It can simulate as an HID device. As a result, you can play race games without buying an expensive steering wheel. To make this project, you will need: (1)an Android device (2)an specific Arduino board, such as Leonardo or Micro (3)a Bluetooth module This video did not actually show the Leonardo board and Bluetooth device. However, the motion data is transported via Bluetooth between Tablet and Leonardo board. How to make Leonardo a joystick? http://www.imaginaryindustries.com/blog/?p=80